using Microsoft.AspNetCore.Mvc.ModelBinding;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Sarand.Core.Base;

namespace Sarand.OperationsMgr.Web.System
{
	//=======================================================================
	/// <summary>
	/// Maps a browser request to a data object. Default class provides a base implementation of a model binder.
	/// <para>Overridden to trim whitespace from input values.</para>
	/// </summary>
	public class OpnModelBinder : IModelBinder
	{
		//-------------------------------------------------------------------
		// Construction.
		public OpnModelBinder ()
		{
		}

		//-------------------------------------------------------------------
		public Task BindModelAsync (ModelBindingContext bindingContext)
		{
			// Ignore selected properties by name.
			var modelName = bindingContext.ModelName;
			if (modelName == "RetainAllWhiteSpace")
				return Task.CompletedTask;

			ValueProviderResult valueProviderResult = bindingContext.ValueProvider.GetValue(modelName);
			if (valueProviderResult == ValueProviderResult.None)
				return Task.CompletedTask;

			// Trim text values.
			bindingContext.Result = ModelBindingResult.Success(valueProviderResult.FirstValue.TrimAll());

			return Task.CompletedTask;
		}

		//-------------------------------------------------------------------
	}
	//=======================================================================
}